WWUS76 KSEW 162344
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
444 PM PDT SAT AUG 16 2008

WAZ504-505-507>509-511-170500-
/O.CON.KSEW.EH.W.0001.000000T0000Z-080817T0500Z/
/O.CON.KSEW.AS.Y.0001.000000T0000Z-080817T0500Z/
SOUTHWEST INTERIOR-EAST PUGET SOUND LOWLANDS-EVERETT AND VICINITY-
SEATTLE/BREMERTON AREA-TACOMA AREA-HOOD CANAL AREA-
444 PM PDT SAT AUG 16 2008

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING...
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING...

STRONG HIGH PRESSURE WILL SLOWLY BEGIN TO BREAK DOWN OVERNIGHT
AND AS A RESULT TEMPERATURES WILL BEGIN TO MODERATE ACROSS THE
REGION. HOWEVER...WARM CONDITIONS WILL REMAIN INTO THE EVENING
HOURS ALLOWING THE EXCESSIVE HEAT WARNING TO CONTINUE THIS
EVENING. COOLER CONDITIONS SUNDAY ONWARD DO NOT WARRANT A NEED
FOR THE HEAT WARNING TO CONTINUE.

DURING EXCESSIVE HEAT EPISODES..DRINK PLENTY OF WATER...AVOID
OVEREXERTION...TRY TO SPEND TIME IN AN AIR CONDITIONED PLACE...
AND CHECK UP ON RELATIVES AND NEIGHBORS. ALSO...PROTECT YOUR PETS
FROM THE DANGERS OF HOT WEATHER. NEVER LEAVE PETS IN A PARKED CAR.
PROVIDE THEM WITH SHADE AND PLENTY OF WATER.

THE COMBINATION OF HOT WEATHER AND A STAGNANT AIR MASS ALSO
RESULTS IN THE BUILDUP OF POLLUTANTS SUCH AS OZONE. OZONE LEVELS
WILL PEAK DURING THE AFTERNOON AND EVENING HOURS AND REACH
UNHEALTHY LEVELS. THUS THE PUGET SOUND CLEAR AIR AGENCY ISSUED A
SMOG WATCH FOR KING...PIERCE...SNOHOMISH...AND KITSAP COUNTIES.

PEOPLE WHO HAVE RESPIRATORY AILMENTS AND LIVE IN URBAN AREAS OR
VALLEYS SHOULD CONSIDER LIMITING OUTDOOR ACTIVITIES...ESPECIALLY
DURING THE HOTTEST TIME OF THE DAY. FOR MORE INFORMATION...
CONTACT YOUR LOCAL CLEAN AIR AGENCY OR VISIT THE PUGET SOUND CLEAN
AIR AGENCY WEB SITE AT WWW.PSCLEANAIR.ORG.

$$

WAZ503-506-512-518-519-170500-
/O.CON.KSEW.AS.Y.0001.000000T0000Z-080817T0500Z/
WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
LOWER CHEHALIS VALLEY AREA-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
444 PM PDT SAT AUG 16 2008

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING...

AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING.

THE COMBINATION OF HOT WEATHER AND A STAGNANT AIR MASS WILL
RESULT IN THE BUILD UP OF POLLUTANTS...SUCH AS OZONE...OVER THE
AREA. OZONE LEVELS WILL PEAK DURING THE AFTERNOON AND EVENING
HOURS AND REACH UNHEALTHY LEVELS. THUS...THE PUGET SOUND CLEAR AIR
AGENCY ISSUED A SMOG WATCH FOR KING...PIERCE...SNOHOMISH...AND
KITSAP COUNTIES.

PEOPLE WHO HAVE RESPIRATORY AILMENTS AND LIVE IN URBAN AREAS OR
VALLEYS SHOULD CONSIDER LIMITING OUTDOOR ACTIVITIES...ESPECIALLY
DURING THE HOTTEST TIME OF THE DAY.

FOR MORE INFORMATION...CONTACT YOUR LOCAL CLEAN AIR AGENCY OR
VISIT THE PUGET SOUND CLEAN AIR AGENCY WEB SITE AT
WWW.PSCLEANAIR.ORG.

$$